Reducing output of tweeter

bawang · 16th November 2006, 12:52 AM

Finally, I am about to jump into the world of DIYing your own speaker sets. But before that, a simple question to all the DIY masters here, "How do you reduce the output of the tweeter without affecting the crossover point?"

I want to use a passive corssover, in a 2-way system. The tweeter has a sensitivity of about 4dB higher than the woofer. Impedance of tweeter is 5 ohm, woofer 8 ohm. Crossover point selected is around 3kHz, which means a capacitor value of about 10uF (tweeter) and inductor value of around 0.45mH (woofer) for a first order crossover.

I don't want to use an L-pad. I know that sensitivity can be reduced by padding with power resistors (wastes the available power, but acceptable to me). But where should I put the resistors? Before the tweeter cap? Am I on the right track?

Thank you.

rabbitz · 16th November 2006, 01:13 AM

I put the series padding resistor before the cap. Make sure you use a 5W resistor.

bawang · 16th November 2006, 01:27 AM

Thanks a lot, rabbitz. Greatly appreciated. Any ideas on the resistance so that the sensitivities of the tweeter & woofer will be the same?

16th November 2006, 12:52 AM	#1
bawang diyAudio Member Join Date: Oct 2001 Location: Malaysia	Reducing output of tweeter Finally, I am about to jump into the world of DIYing your own speaker sets. But before that, a simple question to all the DIY masters here, "How do you reduce the output of the tweeter without affecting the crossover point?" I want to use a passive corssover, in a 2-way system. The tweeter has a sensitivity of about 4dB higher than the woofer. Impedance of tweeter is 5 ohm, woofer 8 ohm. Crossover point selected is around 3kHz, which means a capacitor value of about 10uF (tweeter) and inductor value of around 0.45mH (woofer) for a first order crossover. I don't want to use an L-pad. I know that sensitivity can be reduced by padding with power resistors (wastes the available power, but acceptable to me). But where should I put the resistors? Before the tweeter cap? Am I on the right track? Thank you.

16th November 2006, 01:13 AM	#2
rabbitz diyAudio Member Join Date: Jul 2003 Location: Newcastle, Australia	I put the series padding resistor before the cap. Make sure you use a 5W resistor. __________________ No longer DIY active

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16th November 2006, 01:27 AM	#3
bawang diyAudio Member Join Date: Oct 2001 Location: Malaysia	Thanks a lot, rabbitz. Greatly appreciated. Any ideas on the resistance so that the sensitivities of the tweeter & woofer will be the same?

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